Posted by
Jerome Mutterer-3 on
URL: http://imagej.273.s1.nabble.com/slice-information-for-individual-points-in-ROI-tp5021020p5021029.html
PointRoi extends PolygonRoi so you can get x and y from the PolygonRoi and
slice position from PointRoi, like this:
First put a multipoint roi in the roi manager with points on different
slices, then:
RoiManager rm = RoiManager.getInstance2();
Roi r = rm.getRoi(0);
if (r.getType()==Roi.POINT) {
PointRoi pr = (PointRoi) r;
IJ.log("count:"+pr.getCount(0));
for (int i = 0;i<pr.getCount(0);i++) {
IJ.log ("point_"+i
+",x="+pr.getPolygon().xpoints[i]
+",y="+pr.getPolygon().ypoints[i]
+",z="+pr.getPointPosition(i)
);
}
}
Sincerely,
Jerome.
2018-07-31 16:09 GMT+02:00 Kenneth R Sloan <
[hidden email]>:
> Jerome - does getZPisition work if the points in the selection are in
> different slices? If not, I may be able to use single points.
>
> My limited experimentation shows a Results table with a separate slice
> value for each point , but the Name (suggested in an old thread) shows the
> same slice for every point (looks like the slice of the last point
> selected).
>
> Multipoint (in different slices) would be ideal but I think I can make
> single point selections work.
>
> Thanks very much for the help. I could not find getValue(“Slice”) in the
> docs
> On Tue, Jul 31, 2018 at 04:10 Jerome Mutterer <
>
[hidden email]> wrote:
>
> > Hi Kenneth
> >
> > next to Marcel's suggestion, you could also use:
> >
> > roi.getZPosition();
> >
> > see:
https://github.com/imagej/imagej1/blob/master/ij/gui/Roi.java#L1748> >
> > Sincerely,
> >
> > Jerome.
> >
> >
> >
> > 2018-07-31 9:51 GMT+02:00 Marcel. <
[hidden email]>:
> >
> > > Hello Kenneth,
> > >
> > > you can get the "Slice" column information from the ResultsTable. For
> the
> > > following example the stack and measurements must be available:
> > >
> > > import ij.IJ;
> > > import ij.measure.ResultsTable;
> > > import ij.plugin.PlugIn;
> > >
> > > public class MultiPointResults implements PlugIn {
> > >
> > > public void run(String arg) {
> > > IJ.run("Measure");
> > > ResultsTable rt = ResultsTable.getResultsTable();
> > > for (int i = 0; i < rt.size(); i++) {
> > > System.out.println(rt.getValue("Slice", i));
> > > }
> > > ResultsTable.getResultsWindow().close(false);
> > >
> > > }
> > > }
> > >
> > > The other values (your coordinates) can be extracted by the given tbale
> > > column name.
> > > In this example I close the Results Table dialog after the
> measurements!
> > >
> > >
> > >
> > >
> > > --
> > > Sent from:
http://imagej.1557.x6.nabble.com/> > >
> > > --
> > > ImageJ mailing list:
http://imagej.nih.gov/ij/list.html> > >
> >
> >
> >
> > --
> > Jerome Mutterer
> > CNRS - Institut de biologie moléculaire des plantes
> > 12, rue du Général Zimmer
> > 67084 Strasbourg Cedex
> > www.ibmp.cnrs.fr
> >
> > --
> > ImageJ mailing list:
http://imagej.nih.gov/ij/list.html> >
>
> --
> ImageJ mailing list:
http://imagej.nih.gov/ij/list.html>
--
Jerome Mutterer
CNRS - Institut de biologie moléculaire des plantes
12, rue du Général Zimmer
67084 Strasbourg Cedex
www.ibmp.cnrs.fr
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